# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html


# useful for handling different item types with a single interface
from itemadapter import ItemAdapter

import urllib.request


class ScrapyDangdang34Pipeline:
    def open_spider(self,spider):
        self.fp = open('book.json','w',encoding='utf-8')

    def process_item(self, item, spider):
        self.fp.write(str(item))
        return item

    def close_spider(self,spider):
        self.fp.close()

# 下载图片的管道
class dangdangImgDownloadPipeline:

    def process_item(self, item, spider):
        url = item['src']
        filename = r'./dangdangImg/' + item['name'] + '.jpg'
        urllib.request.urlretrieve(url,filename)


        return item

